Memory stick



FIG. 1 is a top, front, right perspective view of a memory stick showing my new design;

FIG. 2 is a top, front, left perspective view thereof;

FIG. 3 is a top view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left side view thereof;

FIG. 6 is a bottom, front, right perspective view thereof; and,

FIG. 7 is a bottom, rear, right perspective view thereof. 

The ornamental design for a memory stick, as shown and described. 